Manipulator

ABSTRACT

A manipulator includes a mechanical arm, a cable positioned in the mechanical arm, at least one cable protection device, and a plurality of fasteners. The at least one cable protection device is fixed to the mechanical arm by the fasteners. The mechanical arm defines a receiving slot, in which the cable is partially received. The at least one cable protection device includes a fixing member and a resilient arm. The fixing member is connected to the mechanical arm, opposite to the receiving slot. The resilient arm is capable of swinging relative to the fixing member.

BACKGROUND

1. Technical Field

The present disclosure generally relates to manipulators and,particularly, to a manipulator with a cable protection device.

2. Description of Related Art

Manipulators perform specific manual tasks, controlled by operationprograms, such as gripping or handling objects. Manipulators allow theautomatization and mechanization of manufacture processes. In addition,manipulators can operate in dangerous environments. Manipulators arewidely used in machinery, metallurgy, electronics, light industry,atomic energy, and other fields.

A manipulator often includes a cable. Because of the repeated motion ofthe manipulator, the cable is easily worn if directly fixed to thedevice. Often a gum or spring casing is coated on the cable, which,while avoiding cable wear, increases the diameter of the cable inaddition to increasing costs.

Therefore, there is room for improvement within the art.

BRIEF DESCRIPTION OF THE DRAWINGS

The components in the drawings are not necessarily drawn to scale, theemphasis instead being placed upon clearly illustrating the principlesof the present disclosure. Moreover, in the drawings, like referencenumerals designate corresponding parts throughout several views, and allthe views are schematic.

FIG. 1 is an assembled, isometric view of a manipulator.

FIG. 2 is an exploded, isometric view of the manipulator of FIG. 1.

DETAILED DESCRIPTION

Referring to FIG. 1, a manipulator 100 includes a mechanical arm 10, acable 30 positioned in the mechanical arm 10, at least one cableprotection device 50, and a plurality of fasteners 70. The at least onecable protection device 50 is fixed to the mechanical arm 10 by thefasteners 70.

Referring to FIG. 1 and FIG. 2, the mechanical arm 10 includes a surface11, and the mechanical arm 10 defines a rectangular receiving slot 13,at least one fixing hole 15, and at least one connecting slot 17. In theillustrated embodiment, there are eight fixing holes 15 defined in themechanical arm 10 opposite to each other, and arranged on opposite sidesof the receiving slot 13, and two connecting slots 17 in opposite endsof the mechanical arm 10.

The cable 30 is partially received in the receiving slot 13, withopposite ends extending outside two ends thereof.

The cable protection device 50 includes a fixing member 51 and aresilient arm 53 extending from the fixing member 51. In the illustratedembodiment, two cable protection devices 50 are fixed at the two ends ofthe receiving slot 13.

The fixing member 51 includes a base plate 511, two fixing portions 513extending from the base plate 511, and at least one positioning slot515. In the illustrated embodiment, there are four positioning slots 515defined at the four corners of the base plate 511.

The resilient arm 53 extends at an angle from the base plate 511 and isarranged between the two fixing portions 513. The resilient arm 53includes a main body 531 and two restricting portions 533 extending fromtwo sides of the free end of the main body 531. The restricting portions533 are opposite and located between the main body 531 and the surface11 of the mechanical arm 10. The fixing member 51 and the resilient arm53 may be integrally formed.

The fasteners 70 pass through the positioning slots 515 and are fastenedinto the fixing holes 15 to fix the cable protection device 50 to themechanical arm 10. The diameter of the shaft of the fastener 70 issubstantially the same as the width of the positioning slot 515, butless than the length of the positioning slot 515. Therefore, thefastener 70 can be positioned in the positioning slot 515 and move inthe positioning slot 515 along the length of the positioning slot 515 byan external force, so that the position of the cable protection device50, located on the mechanical arm 10, can be adjusted.

When the cable protection device 50 is fixed on the mechanical arm 10,part of the receiving slot 13 is covered by the fixing member 51. Thecable 30 can be positioned by the base plate 511 of the fixing member 51to prevent the cable 30 from dropping from the receiving slot 13. Anopening 55 is formed between the resilient arm 53 and the mechanical arm10, through which the cable 30 extends out of the receiving slot 13.When the manipulator 100 is operated, the cable 30 contacts theresilient arm 53, and the elastic swing of the resilient arm 53 reducesfriction between the resilient arm 53 and the cable 30, thus protectingthe cable 30 from abrasion. The fixing member 51 can be integrallyformed with the resilient arm 53, so that the cable protection device 50has a simple structure and low manufacturing cost.

In addition, the location of the fixing member 51 on the mechanical arm10 can be adjusted according to different sizes of the cable, renderingthe cable protection device 50 applicable to a variety of environments.

Finally, while various embodiments have been described and illustrated,the disclosure is not to be construed as being limited thereto. Variousmodifications can be made to the embodiments by those skilled in the artwithout departing from the true spirit and scope of the disclosure asdefined by the appended claims.

1. A manipulator, comprising: a mechanical arm; a cable connecting tothe mechanical arm; and at least one cable protection device comprisinga fixing member connected to the mechanical arm and a resilient armextending from the fixing member at an angle, wherein the cable islocated between the cable protection device and the mechanical arm. 2.The manipulator of claim 1, wherein the mechanical arm defines areceiving slot in which the cable is partially received, part of whichis covered by the at least one cable protection device.
 3. Themanipulator of claim 2, wherein the fixing member defines at least onepositioning slot; the mechanical arm defines at least one fixing hole;and the manipulator further comprises at least one fastener extendingthrough the at least one positioning slot and the at least one fixinghole to connect with the at least one cable protection device.
 4. Themanipulator of claim 3, wherein a diameter of the shaft of the fasteneris substantially the same as the width of the positioning slot, but lessthan a length of the positioning slot.
 5. The manipulator of claim 3,wherein a free end of the resilient arm forms at least one restrictingportion.
 6. The manipulator of claim 5, wherein the at least onerestricting portion comprises two restricting portions, respectivelyformed at opposite sides of the free end of the resilient arm.
 7. Themanipulator of claim 2, wherein the at least one cable protection devicecomprises two cable protection devices, respectively positioned atopposite ends of the receiving slot.
 8. The manipulator of claim 1,wherein the fixing member and the resilient arm are integrally formed.9. The manipulator of claim 1, wherein the mechanical arm defines atleast one connecting slot.
 10. The manipulator of claim 9, wherein theat least one connecting slot comprises two connecting slots,respectively arranged at two ends of the mechanical arm.
 11. Amanipulator, comprising: A mechanical arm; a cable connected to themechanical arm; and at least one cable protection device comprising afixing member fixing the cable with the mechanical arm and a resilientarm extending from the fixing member, wherein the resilient armelastically contacts the cable.
 12. The manipulator of claim 11, whereinthe mechanical arm defines a receiving slot in which the cable ispartially received, part of which is covered by the at least one cableprotection device.
 13. The manipulator of claim 12, wherein the at leastone cable protection device is fixed on the mechanical arm and the cableis positioned in the receiving slot by the fixing member.
 14. Themanipulator of claim 13, wherein at least one opening is formed betweenthe resilient arm and the mechanical arm and at least one end of thecable extends outside of the receiving slot through the at least oneopening.
 15. The manipulator of claim 14, wherein the at least one cableprotection device comprises two cable protection devices, respectivelypositioned at opposite ends of the receiving slot; the at least oneopening comprises two openings, out of which opposite ends of the cablecorrespondingly extend outside of the receiving slot.
 16. Themanipulator of claim 11, wherein the fixing member and the resilient armare integrally formed.